<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 4.3.2 or newer
 *
 * @package		CodeIgniter
 * @author		ExpressionEngine Dev Team
 * @copyright	Copyright (c) 2008 - 2009, EllisLab, Inc.
 * @license		http://codeigniter.com/user_guide/license.html
 * @link		http://codeigniter.com
 * @since		Version 1.0
 * @filesource
 */

// ------------------------------------------------------------------------

/**
 * Logging Class
 *
 * @package		CodeIgniter
 * @subpackage	Libraries
 * @category	Logging
 * @author		ExpressionEngine Dev Team
 * @link		http://codeigniter.com/user_guide/general/errors.html
 */
class CI_Log {

  var $log_path;
  var $_threshold	= 1;
  var $_date_fmt	= 'Y-m-d H:i:s';
  var $_enabled	= TRUE;
  var $_levels	= array('ERROR' => '1', 'DEBUG' => '2',  'INFO' => '3', 'ALL' => '4');

  /**
   * Constructor
   *
   * @access	public
   */
  function CI_Log() {
    $config =& get_config();

    $this->log_path = ($config['log_path'] != '') ? $config['log_path'] : BASEPATH.'logs/';

    if ( ! is_dir($this->log_path) OR ! is_really_writable($this->log_path)) {
      $this->_enabled = FALSE;
    }

    if (is_numeric($config['log_threshold'])) {
      $this->_threshold = $config['log_threshold'];
    }

    if ($config['log_date_format'] != '') {
      $this->_date_fmt = $config['log_date_format'];
    }
  }

  // --------------------------------------------------------------------

  /**
   * Write Log File
   *
   * Generally this function will be called using the global log_message() function
   *
   * @access	public
   * @param	string	the error level
   * @param	string	the error message
   * @param	bool	whether the error is a native PHP error
   * @return	bool
   */
  function write_log($level = 'error', $msg, $php_error = FALSE) {
    if ($this->_enabled === FALSE) {
      return FALSE;
    }

    $level = strtoupper($level);

    if ( ! isset($this->_levels[$level]) OR ($this->_levels[$level] > $this->_threshold)) {
      return FALSE;
    }

    $filepath = $this->log_path.'log-'.date('Y-m-d').EXT;
    $message  = '';

    if ( ! file_exists($filepath)) {
      $message .= "<"."?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed'); ?".">\n\n";
    }

    if ( ! $fp = @fopen($filepath, FOPEN_WRITE_CREATE)) {
      return FALSE;
    }

    $message .= $level.' '.(($level == 'INFO') ? ' -' : '-').' '.date($this->_date_fmt). ' --> '.$msg."\n";

    flock($fp, LOCK_EX);
    fwrite($fp, $message);
    flock($fp, LOCK_UN);
    fclose($fp);

    @chmod($filepath, FILE_WRITE_MODE);
    return TRUE;
  }

}
// END Log Class

/* End of file Log.php */
/* Location: ./system/libraries/Log.php */